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Current version of mostly working dahdi driver

This commit is contained in:
Matthew Fredrickson 2010-03-15 12:22:37 -05:00 committed by Harald Welte
parent 17289eda65
commit cc2bc35f2c
1 changed files with 155 additions and 61 deletions
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216
openbsc/src/input/dahdi.c
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@ -34,6 +34,7 @@
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <mISDNif.h>
#include <dahdi/user.h>
//#define AF_COMPATIBILITY_FUNC
//#include <compat_af_isdn.h>
@ -106,17 +107,20 @@ static int handle_ts1_read(struct bsc_fd *bfd)
hh = (struct mISDNhead *) msg->data;
ret = read(bfd->fd, &msg->data, TS1_ALLOC_SIZE - 16);
ret = read(bfd->fd, msg->data, TS1_ALLOC_SIZE - 16);
if (ret < 0) {
perror("read ");
}
msgb_put(msg, ret);
msgb_put(msg, ret - 2);
if (ret <= 3) {
perror("read ");
}
DEBUGP(DMI, "<= len = %d, prim(0x%x) id(0x%x): %s\n",
ret, hh->prim, hh->id, get_prim_name(hh->prim));
l2addr.sapi = msg->data[0] >> 2;
l2addr.tei = msg->data[1] >> 1;
DEBUGP(DMI, "<= len = %d, sapi(%d) tei(%d)",
ret, l2addr.sapi, l2addr.tei);
int ilen;
lapd_mph_type prim;
@ -127,6 +131,7 @@ static int handle_ts1_read(struct bsc_fd *bfd)
case LAPD_MPH_ACTIVATE_IND: hh->prim = MPH_ACTIVATE_IND; break;
case LAPD_MPH_DEACTIVATE_IND: hh->prim = MPH_DEACTIVATE_IND; break;
case LAPD_DL_DATA_IND: hh->prim = DL_DATA_IND; break;
case LAPD_DL_UNITDATA_IND: hh->prim = DL_UNITDATA_IND; break;
default: printf("ERROR: unknown prim\n");
};
@ -136,8 +141,8 @@ static int handle_ts1_read(struct bsc_fd *bfd)
return 0;
};
l2addr.sapi = msg->data[0] >> 2;
l2addr.tei = msg->data[1] >> 1;
//l2addr.sapi = msg->data[0] >> 2;
//l2addr.tei = msg->data[1] >> 1;
msgb_pull(msg, 2);
#if 0
@ -223,6 +228,7 @@ static int handle_ts1_read(struct bsc_fd *bfd)
DEBUGP(DMI, "hh->prim %08x\n", hh->prim);
#if 1
switch (hh->prim) {
case DL_INFORMATION_IND:
@ -239,6 +245,7 @@ static int handle_ts1_read(struct bsc_fd *bfd)
/* save the channel number in the driver private struct */
link->driver.misdn.channel = l2addr.channel;
break;
case MPH_ACTIVATE_IND:
case DL_ESTABLISH_IND:
DEBUGP(DMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n",
l2addr.channel, l2addr.sapi, l2addr.tei);
@ -251,8 +258,11 @@ static int handle_ts1_read(struct bsc_fd *bfd)
break;
case DL_DATA_IND:
case DL_UNITDATA_IND:
msg->l2h = msg->data + MISDN_HEADER_LEN;
DEBUGP(DMI, "RX: %s\n", hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
if (hh->prim == DL_DATA_IND)
msg->l2h = msg->data + 2;
else
msg->l2h = msg->data + 1;
DEBUGP(DMI, "RX: %s\n", hexdump(msgb_l2(msg), ret));
ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi);
break;
case PH_ACTIVATE_IND:
@ -267,6 +277,7 @@ static int handle_ts1_read(struct bsc_fd *bfd)
break;
}
#endif
DEBUGP(DMI, "Returned ok\n");
return ret;
}
@ -275,8 +286,10 @@ static int ts_want_write(struct e1inp_ts *e1i_ts)
/* We never include the mISDN B-Channel FD into the
* writeset, since it doesn't support poll() based
* write flow control */
if (e1i_ts->type == E1INP_TS_TYPE_TRAU)
if (e1i_ts->type == E1INP_TS_TYPE_TRAU) {
fprintf(stderr, "Trying to write TRAU ts\n");
return 0;
}
e1i_ts->driver.misdn.fd.when |= BSC_FD_WRITE;
@ -291,6 +304,17 @@ static void timeout_ts1_write(void *data)
ts_want_write(e1i_ts);
}
static void dahdi_write_msg(uint8_t *data, int len, void *cbdata)
{
struct bsc_fd *bfd = cbdata;
int ret;
ret = write(bfd->fd, data, len + 2);
if (ret < 0)
fprintf(stderr, "%s write failed %d\n", __func__, ret);
}
static int handle_ts1_write(struct bsc_fd *bfd)
{
struct e1inp_line *line = bfd->data;
@ -299,7 +323,7 @@ static int handle_ts1_write(struct bsc_fd *bfd)
struct e1inp_sign_link *sign_link;
struct msgb *msg;
//u_int8_t *l2_data;
int ret;
//int ret;
//int no_oml = 0;
bfd->when &= ~BSC_FD_WRITE;
@ -311,17 +335,14 @@ static int handle_ts1_write(struct bsc_fd *bfd)
return 0;
}
#if 0
DEBUGP(DMI, "TX TEI(%d) SAPI(%d): %s\n", sign_link->tei,
sign_link->sapi, hexdump(l2_data, msg->len - MISDN_HEADER_LEN));
#endif
lapd_transmit(sign_link->tei, msg->data, msg->len, bfd);
ret = write(bfd->fd, msg->data, msg->len + 2);
//ret = write(bfd->fd, msg->data, msg->len + 2);
#if 0
if (ret < 0)
fprintf(stderr, "%s write failed %d\n", __func__, ret);
#endif
msgb_free(msg);
/* set tx delay timer for next event */
@ -329,82 +350,105 @@ static int handle_ts1_write(struct bsc_fd *bfd)
e1i_ts->sign.tx_timer.data = e1i_ts;
bsc_schedule_timer(&e1i_ts->sign.tx_timer, 0, 50000);
return ret;
return 0;
}
#define BCHAN_TX_GRAN 160
static int invertbits = 1;
static u_int8_t flip_table[256];
static void init_flip_bits(void)
{
int i,k;
for (i = 0 ; i < 256 ; i++) {
u_int8_t sample = 0 ;
for (k = 0; k<8; k++) {
if ( i & 1 << k ) sample |= 0x80 >> k;
}
flip_table[i] = sample;
}
}
static u_int8_t * flip_buf_bits ( u_int8_t * buf , int len)
{
int i;
char * start = buf;
for (i = 0 ; i < len; i++) {
buf[i] = flip_table[(u_int8_t)buf[i]];
}
return start;
}
#define D_BCHAN_TX_GRAN 1024
/* write to a B channel TS */
static int handle_tsX_write(struct bsc_fd *bfd)
{
struct e1inp_line *line = bfd->data;
unsigned int ts_nr = bfd->priv_nr;
struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
struct mISDNhead *hh;
u_int8_t tx_buf[BCHAN_TX_GRAN + sizeof(*hh)];
u_int8_t tx_buf[D_BCHAN_TX_GRAN];
struct subch_mux *mx = &e1i_ts->trau.mux;
int ret;
hh = (struct mISDNhead *) tx_buf;
hh->prim = PH_DATA_REQ;
ret = subchan_mux_out(mx, tx_buf, D_BCHAN_TX_GRAN);
subchan_mux_out(mx, tx_buf+sizeof(*hh), BCHAN_TX_GRAN);
if (ret != D_BCHAN_TX_GRAN) {
fprintf(stderr, "Huh, got ret of %d\n", ret);
if (ret < 0)
return ret;
}
DEBUGP(DMIB, "BCHAN TX: %s\n",
hexdump(tx_buf+sizeof(*hh), BCHAN_TX_GRAN));
hexdump(tx_buf, D_BCHAN_TX_GRAN));
ret = send(bfd->fd, tx_buf, sizeof(*hh) + BCHAN_TX_GRAN, 0);
if (ret < sizeof(*hh) + BCHAN_TX_GRAN)
DEBUGP(DMIB, "send returns %d instead of %lu\n", ret,
sizeof(*hh) + BCHAN_TX_GRAN);
if (invertbits) {
flip_buf_bits(tx_buf, ret);
}
ret = write(bfd->fd, tx_buf, ret);
if (ret < D_BCHAN_TX_GRAN)
fprintf(stderr, "send returns %d instead of %lu\n", ret,
D_BCHAN_TX_GRAN);
return ret;
}
#define TSX_ALLOC_SIZE 4096
#define D_TSX_ALLOC_SIZE 1024
/* FIXME: read from a B channel TS */
static int handle_tsX_read(struct bsc_fd *bfd)
{
struct e1inp_line *line = bfd->data;
unsigned int ts_nr = bfd->priv_nr;
struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "DAHDI TSx");
struct mISDNhead ah;
struct mISDNhead *hh = &ah;
struct msgb *msg = msgb_alloc(D_TSX_ALLOC_SIZE, "DAHDI TSx");
int ret;
if (!msg)
return -ENOMEM;
hh = (struct mISDNhead *) msg->data;
ret = read(bfd->fd, msg->data, TSX_ALLOC_SIZE);
if (ret < 0) {
fprintf(stderr, "read error %s\n", strerror(errno));
ret = read(bfd->fd, msg->data, D_TSX_ALLOC_SIZE);
if (ret < 0 || ret != D_TSX_ALLOC_SIZE) {
fprintf(stderr, "read error %d %s\n", ret, strerror(errno));
return ret;
}
msgb_put(msg, ret - 2);
if (hh->prim != PH_CONTROL_IND)
DEBUGP(DMIB, "<= BCHAN len = %d, prim(0x%x) id(0x%x): %s\n",
ret, hh->prim, hh->id, get_prim_name(hh->prim));
switch (hh->prim) {
case PH_DATA_IND:
msg->l2h = msg->data + MISDN_HEADER_LEN;
DEBUGP(DMIB, "BCHAN RX: %s\n",
hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
ret = e1inp_rx_ts(e1i_ts, msg, 0, 0);
break;
case PH_ACTIVATE_IND:
case PH_DATA_CNF:
/* physical layer indicates that data has been sent,
* we thus can send some more data */
ret = handle_tsX_write(bfd);
default:
break;
if (invertbits) {
flip_buf_bits(msg->data, ret);
}
/* FIXME: why do we free signalling msgs in the caller, and trau not? */
msgb_put(msg, ret);
msg->l2h = msg->data;
DEBUGP(DMIB, "BCHAN RX: %s\n",
hexdump(msgb_l2(msg), ret));
ret = e1inp_rx_ts(e1i_ts, msg, 0, 0);
/* physical layer indicates that data has been sent,
* we thus can send some more data */
//ret = handle_tsX_write(bfd);
msgb_free(msg);
return ret;
@ -429,6 +473,8 @@ static int dahdi_fd_cb(struct bsc_fd *bfd, unsigned int what)
case E1INP_TS_TYPE_TRAU:
if (what & BSC_FD_READ)
rc = handle_tsX_read(bfd);
if (what & BSC_FD_WRITE)
rc = handle_tsX_write(bfd);
/* We never include the mISDN B-Channel FD into the
* writeset, since it doesn't support poll() based
* write flow control */
@ -472,6 +518,39 @@ struct e1inp_driver dahdi_driver = {
.want_write = ts_want_write,
};
void dahdi_set_bufinfo(int fd, int as_sigchan)
{
struct dahdi_bufferinfo bi;
int x = 0;
if (ioctl(fd, DAHDI_GET_BUFINFO, &bi)) {
fprintf(stderr, "Error getting bufinfo\n");
exit(-1);
}
if (as_sigchan) {
bi.numbufs = 4;
bi.bufsize = 512;
} else {
bi.numbufs = 4;
bi.bufsize = D_BCHAN_TX_GRAN;
//bi.txbufpolicy = DAHDI_POLICY_WHEN_FULL;
}
if (ioctl(fd, DAHDI_SET_BUFINFO, &bi)) {
fprintf(stderr, "Error setting bufinfo\n");
exit(-1);
}
if (!as_sigchan) {
if (ioctl(fd, DAHDI_AUDIOMODE, &x)) {
fprintf(stderr, "Error setting bufinfo\n");
exit(-1);
}
}
}
static int mi_e1_setup(struct e1inp_line *line, int release_l2)
{
int ts, ret;
@ -493,15 +572,27 @@ static int mi_e1_setup(struct e1inp_line *line, int release_l2)
continue;
break;
case E1INP_TS_TYPE_SIGN:
bfd->fd = open(openstr, O_RDWR);
bfd->fd = open(openstr, O_RDWR | O_NONBLOCK);
if (bfd->fd == -1) {
fprintf(stderr, "%s could not open %s %s\n",
__func__, openstr, strerror(errno));
exit(-1);
}
bfd->when = BSC_FD_READ;
dahdi_set_bufinfo(bfd->fd, 1);
break;
case E1INP_TS_TYPE_TRAU:
bfd->fd = open(openstr, O_RDWR);
bfd->fd = open(openstr, O_RDWR | O_NONBLOCK);
if (bfd->fd == -1) {
fprintf(stderr, "%s could not open %s %s\n",
__func__, openstr, strerror(errno));
exit(-1);
}
dahdi_set_bufinfo(bfd->fd, 0);
/* We never include the mISDN B-Channel FD into the
* writeset, since it doesn't support poll() based
* write flow control */
bfd->when = BSC_FD_READ;
bfd->when = BSC_FD_READ | BSC_FD_WRITE;
break;
}
@ -580,11 +671,14 @@ int mi_e1_line_update(struct e1inp_line *line)
return -EINVAL;
}
#endif
init_flip_bits();
ret = mi_e1_setup(line, 1);
if (ret)
return ret;
lapd_transmit_cb = dahdi_write_msg;
return 0;
}